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Which of the following ion is expected to have least value of molar conductivity at infinite dilution in an aqueous solution:
- a)Na+
- b)K+
- c)Rb+
- d)Cs+
Correct answer is option 'A'. Can you explain this answer?
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Which of the following ion is expected to have least value of molar co...
Na+ does not have the lowest molar conductance of all ions. It has lower molar conductance than the ions that are greater in size than Na such as K+, Cs+ as the molar conductance is inversely proportional to solvation of ions. Smaller the ion, greater will be the solvation and hence lower will be the molar conductance.
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Which of the following ion is expected to have least value of molar co...
Explanation:
Molar conductivity at infinite dilution can be defined as the conductivity of a solution when an infinitely small amount of solute is dissolved in a solvent.
Factors affecting molar conductivity at infinite dilution are:
- Size of the ion
- Charge on the ion
- Solvent used
As we move down a group in the periodic table, the size of the ion increases due to an increase in the number of shells. Therefore, the molar conductivity at infinite dilution increases down the group.
However, in this case, we are comparing ions in the same group. The ions have the same charge (+1) and are dissolved in the same solvent (water). Therefore, the size of the ion becomes the deciding factor.
Sodium ion (Na+) is the smallest ion among the given options. As the size of the ion decreases, the number of solvent molecules surrounding the ion increases, and the ion becomes more tightly bound to the solvent molecules. This reduces the mobility of the ion and hence the molar conductivity at infinite dilution.
Therefore, Na+ is expected to have the least value of molar conductivity at infinite dilution in an aqueous solution.
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Molar conductivity at infinite dilution can be defined as the conductivity of a solution when an infinitely small amount of solute is dissolved in a solvent.
Factors affecting molar conductivity at infinite dilution are:
- Size of the ion
- Charge on the ion
- Solvent used
As we move down a group in the periodic table, the size of the ion increases due to an increase in the number of shells. Therefore, the molar conductivity at infinite dilution increases down the group.
However, in this case, we are comparing ions in the same group. The ions have the same charge (+1) and are dissolved in the same solvent (water). Therefore, the size of the ion becomes the deciding factor.
Sodium ion (Na+) is the smallest ion among the given options. As the size of the ion decreases, the number of solvent molecules surrounding the ion increases, and the ion becomes more tightly bound to the solvent molecules. This reduces the mobility of the ion and hence the molar conductivity at infinite dilution.
Therefore, Na+ is expected to have the least value of molar conductivity at infinite dilution in an aqueous solution.
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Explanation:
Molar conductivity at infinite dilution can be defined as the conductivity of a solution when an infinitely small amount of solute is dissolved in a solvent.
Factors affecting molar conductivity at infinite dilution are:
- Size of the ion
- Charge on the ion
- Solvent used
As we move down a group in the periodic table, the size of the ion increases due to an increase in the number of shells. Therefore, the molar conductivity at infinite dilution increases down the group.
However, in this case, we are comparing ions in the same group. The ions have the same charge (+1) and are dissolved in the same solvent (water). Therefore, the size of the ion becomes the deciding factor.
Sodium ion (Na+) is the smallest ion among the given options. As the size of the ion decreases, the number of solvent molecules surrounding the ion increases, and the ion becomes more tightly bound to the solvent molecules. This reduces the mobility of the ion and hence the molar conductivity at infinite dilution.
Therefore, Na+ is expected to have the least value of molar conductivity at infinite dilution in an aqueous solution.
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Which of the following ion is expected to have least value of molar co...
- Na+ has lower molar conductance than the ions that are greater in size than Na such as K+, Cs+ as the molar conductance is inversely proportional to the solvation of ions.
- Smaller the ion, the greater will be the solvation, and hence lower will be the molar conductance.
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Which of the following ion is expected to have least value of molar conductivity at infinite dilution in an aqueous solution:a)Na+b)K+c)Rb+d)Cs+Correct answer is option 'A'. Can you explain this answer?
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